Apparatus for manufacturing lime sulphur



July 3, 1923. 5,469,621

' R. TAKI APPARATUS FOR MANUFACTURING LIME SULPHUR Filed Feb. 18. 1921 11 b P g M11: 5 c f fi q f5 A patented duly 3, E 23.

stares the o i i i i hl ROKUJIEO TAKE, 0F ABE- GUN, SHIZUOKA-KEN, JAPAN.

AEPARATUS FOR MANUFACTU'BING- LLY'IE SULPHUR.

Application filed February 18, 2.921.

T 0 0H whom it may concern:

Be it known that I. RoKUJrRoTAnI, a subject of the Empire of Japan. residing at No. 316 Shimizu-Machi, Abe-Gun, Shizuokal'\'en...lapan, have invented certain new and useful Invention of an Apparatus for Manuiacturiup Lime Sulphun of which the following is a specification.

My invention relates to an apparatus for manufacturing lime sulphur comprising a horizontally disposed pressure-proof revolv ing tank. means for heating and agitating contents or the tank and means for discharging gases generated'in the tank.

The object of the invention is to provide an apparatus of the type which can produce a thick lime sulphur easily. rapidly and mos cconon'iically.

The accompanying drawings show an ex ample ot' the apparatus of the invention.

In the drawings:

Figure 1 is a longitudinally sectioned side elevation. and Figure 2 is a plan view, oi the apparatus. Figure 3 is a detail view of a swiveled joint forming part of the apparatus.

Referring to the accompanying drawings, a hori ontally disposed pressure-proof tank is shown having its end walls provided with t-runnions 2 which are rotatably mounted in suitable bearings. One of the trunnions is provided, with a fixed gear 3 which meshes with a gear 4 fixed to a shaft 5 havingapuliey 6 which may be driven from any suitable prirne mover. A steam supply pipe 7 extends through one of the trunnions 2 and its portion which is arranged within the tank 1 is of substantially, U-shape as shown at 8 while the extremity of the steam-pipe is closed and swiveled in the inner end of a pipe 11 which extends through the other trunnion 2. The pipes 7 and 11 are normally stationary but the pipe with its U- shaped portion 8 may he turned to cause the U-shaped portion of the pipe to assume a position diametrically opposite to that shown in Fig. 1 of the drawing. This is to avoid the sulphur and other deposits closing perforations in the U-shaped portion of the steam pipe 7 during the cooling operation of contents of the tank. In order to permit,

the U- haped portion 8 of the steam pipe to be moved from the lower position which it occupies in Figure l, to a position diametrically opposite to said position, the portion of the pipe den'gnates 7 may be sta- Serial No. 448,111.

tionary or fixed while the portion 7 is rotatablv mounted in the right hand trunnion 12. With such a construction. a swi'veled joint. such as shown in Figure 3 will he provided at 7". The portion of the pipe 7 is provided with a fixed collar carrying a resilient arm 7 having an aperture '2" designed to engage the outer ends of either of the bolts 7 or 7. hen the aperture 7 is engaging the bolt 7 the sprin arm 7 will prevent the pipe 7* from turning, and will hold the portion 8 in the lower portion of the tank. When the arm 7 is released from the bolt 7, said arm may be turned 180? to cause the perforated pipe 8 to occupy a position in the upper portion of the tank, and at this time the aperture 7 may be en- "raged with the bolt 7 for holding the perforated pipe in its upper position. The tank 7 provided with an opening closed by a cover 9. and a valve 10 is arranged at one side of the tank, The inner end of the pipe 11 is branched as shown and this branch ex tends upwardly and has its end arranged near the upper portion of the tank for the purpose of discharging gases generated within the tank. These gases are carried by the pipe 11 and discharged beneath the surface of a body of caustic-soda solution 35 arranged within a subsidiary tank 12. A

valve 13 is arranged on the pipe 11 for the purpose of adjusting the discharge of gases to maintain a proper pressure in the tank.

Suitable means may be provided for preventing movement of thepipe 11. and such a ineans may consist of a vertical post 11? having a bifurcated upper end in which is pivotally mounted the outer end of a lever 11" having a forked end 11 engaging the depending portion of the pipe 11.

The operation of manufacturing lime sulphur by the apparatus is as follows 2- Calcium oxide. sulphur and water are mixed in aproper proportion and the mixture is put into the. tank to fill about 70 per cent of its depth, as shown in Fig. 1. The cover 9 and the valve 13 are then closed, and then the tank is rotated while steam under a pressure of approximately 25 lbs. is introduced into the tank. The contents of the tank are thus heated under pressure. by steam and by the heat evolved by the combination of calcium oxide. the pressure in the tank being maintained at aproper degree by the adjustment of the valve 13. The contents of the tank 1 are continuously agitated by the steam jets issuing from perforations in the U-shaped portion 8 of the pipe and as the tank revolves the portion 8 of the steam pipe will act as adasher against which the mixture is thrown. The operation above mentioned is maintained for a proper length of time and chemical action is caused between the calcium oxide and the sulphur and a thick liquid lime sulplan is produced.

-The gas evolved in the tank 1 will pass off through the pipe 11 into the caustic-soda solution contained in the tank 12. The sulphureted hydrogen produced during the above process and discharged through the pipe 11 will be led into the caustic soda tankto secure sodium sulphide as a by-product.

, Thus sodium sulphide is economically produced and the passage of the sulphureted hydrogen into the caustic-soda avoids the diffusion of the offensive odor generated v within the tank.

When the chemical action in the tank is nearly completed, steam is cut off, the rota- :tion of the tank is discontinuer'l, and the tank and its contents are permitted to cool for a proper length of time, until the excess portion of sulphur melted during the heating,

deposits in solid form upon the bottom of the tank. The lime, soil, mud, and other mixture substances, in the sulphur settle solidly in stratified relation above the excess portion of sulphur melted during the \Vhen the sulphur becomes comthe lime sulphur is first removed, and then the mud etc. as well as the sulphur deposits are taken out.

The apparatus of this invention is especially suited for carrying out the process of economically.

I claim.

1. An apparatus for manufacturing lime sulphur comprising a horizontally disposed pressure-proof rotatable tank provided with a filling opening, a cover for said opening, trunnions fixed at both ends of said tank, means for supporting said trunnions, means for rotating said tank, a steam pipe extending through one of said trunnions and having a normally stationary U-shaped perforated portion normally arranged inthe lower portion of said tank in order to discharge steam into the material beneath the level of said material, said U-shaped portion being pivotally mounted in said tank to permit said U-shaped portion to be moved to and maintained in a position at the upper portion of the tank during the rotation of the tank for cooling the contents, and a gas discharge pipe opening into the upper portions of the interior of the tank and ranged exteriorly ofthe tank.

2. An apparatus as claimed in claim 1 in which the inner end of the U-shaped portion Baum can be obtainedhaving its inner end its outer end ar of the steam pipe is pivotally connected to 'the gas discharge pipe.

ROK'UJ'IRO TAKI.

Witnesses:

KWAN JEHIKAWA, NEYRoN O. Horns. 

